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authorMarco Elver <elver@google.com>2019-11-14 19:02:58 +0100
committerPaul E. McKenney <paulmck@kernel.org>2019-11-16 07:23:14 -0800
commit0ebba7141eadc4804ec5b4bb5106331b0c3abf4c (patch)
treea617750df8458739f01d1255ab33249f1de4b25f /mm
parent5f5c971292b43fed68273d5cba7202f6bd953df9 (diff)
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build, kcsan: Add KCSAN build exceptions
This blacklists several compilation units from KCSAN. See the respective inline comments for the reasoning. Signed-off-by: Marco Elver <elver@google.com> Acked-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/Makefile8
1 files changed, 8 insertions, 0 deletions
diff --git a/mm/Makefile b/mm/Makefile
index d996846697ef..56c1964bb3a1 100644
--- a/mm/Makefile
+++ b/mm/Makefile
@@ -7,6 +7,14 @@ KASAN_SANITIZE_slab_common.o := n
KASAN_SANITIZE_slab.o := n
KASAN_SANITIZE_slub.o := n
+# These produce frequent data race reports: most of them are due to races on
+# the same word but accesses to different bits of that word. Re-enable KCSAN
+# for these when we have more consensus on what to do about them.
+KCSAN_SANITIZE_slab_common.o := n
+KCSAN_SANITIZE_slab.o := n
+KCSAN_SANITIZE_slub.o := n
+KCSAN_SANITIZE_page_alloc.o := n
+
# These files are disabled because they produce non-interesting and/or
# flaky coverage that is not a function of syscall inputs. E.g. slab is out of
# free pages, or a task is migrated between nodes.